Cosmetic brush



FIG. 1 is a top perspective view of an embodiment of a cosmetic brush;

FIG. 2 is a bottom perspective view of the cosmetic brush shown in FIG. 1;

FIG. 3 is a back elevation view of the cosmetic brush shown in FIG. 1;

FIG. 4 is a front elevation view of the cosmetic brush shown in FIG. 1;

FIG. 5 is a right side elevation view of the cosmetic brush shown in FIG. 1;

FIG. 6 is a left side elevation view of the cosmetic brush shown in FIG. 1;

FIG. 7 is a top plan view of the cosmetic brush shown in FIG. 1; and,

FIG. 8 is a bottom plan view of the cosmetic brush shown in FIG. 1.

The dashed lines in FIGS. 9-16 are included for the purpose of illustrating portions of the cosmetic brush that form no part of the claimed design. 

CLAIM The ornamental design for a cosmetic brush, as shown and described. 